CD4518BNSRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments CD4518BNSRG4 is a dual BCD up-counter in the CMOS 4000 series with Schmitt-trigger gated clock inputs, supporting count frequencies up to 1.5 MHz and a 50 pF load capacitance. Available in a 16-pin SOP package with load/preset input capability. In stock from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD4518BNSRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD4518BNSRG4?
- Dual BCD decade up-counter with independent gated clock and Schmitt-trigger inputs enabling noise-immune counting up to 1.5 MHz clock frequency
- Wide supply voltage range from 3 V to 15 V compatible with both 5 V TTL-level and 12 V CMOS systems for versatile logic family interfacing
- Load/preset input capability allowing synchronous parallel loading of counter values for flexible divide-by-N and timer initialization applications
What is CD4518BNSRG4 used for?
The CD4518BNSRG4 is used in frequency dividers, event counters, and timer circuits in industrial control systems, consumer electronics, and educational laboratory equipment requiring reliable decade counting at up to 1.5 MHz. Its dual-counter architecture enables cascaded multi-decade counting for display drivers, time-base generators, and BCD-to-seven-segment decode chains. The CMOS 4000-series logic family compatibility makes it a versatile drop-in for legacy and new designs operating from 3 V to 15 V supply rails.
What are the specifications of CD4518BNSRG4?
| YTEOL | 0 |
| Additional Feature | GATED CLOCK; SCHMITT TRIGGER ON CLOCK INPUT |
| Count Direction | UP |
| Family | 4000/14000/40000 |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | YES |
| Logic IC Type | DECADE COUNTER |
| Max Frequency@Nom-Sup | 1500000Hz |
| Max I(ol) | 0.004200000000000001A |
| Mode of Operation | SYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Prop. Delay@Nom-Sup | 560ns |
| Propagation Delay (tpd) | 560ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 4MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the CD4518BNSRG4 datasheet?
CD4518BNSRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD4518BNSRG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum clock frequency and supply voltage range of the CD4518BNSRG4?
The CD4518BNSRG4 supports a maximum clock frequency of 1.5 MHz at nominal supply voltage with a 50 pF load capacitance. Its supply voltage range spans 3 V to 15 V, covering both low-voltage 3.3 V microcontroller systems and legacy 12 V CMOS logic environments, making it compatible with a wide range of existing board power rails.
How does the Schmitt-trigger clock input of the CD4518BNSRG4 improve counting reliability in noisy environments?
The Schmitt-trigger input on the CD4518BNSRG4 clock pin provides hysteresis of approximately 0.9 V at 5 V supply, rejecting noise spikes below the switching threshold and preventing false triggering from slow-rise-time or bouncing clock signals. This makes the CD4518BNSRG4 significantly more reliable than standard CMOS counters in industrial environments with 50 Hz to 60 Hz power line interference or mechanical switch bounce up to several milliseconds.
How can the dual-counter architecture of the CD4518BNSRG4 be used to build a 2-digit BCD display driver?
The CD4518BNSRG4 contains 2 independent BCD decade counters in a single 16-pin SOP package. By connecting the carry output of the first counter to the clock input of the second, engineers create a 2-decade counter chain counting from 00 to 99. Each counter's 4-bit BCD output drives a separate BCD-to-7-segment decoder, enabling a complete 2-digit numeric display with only 2 ICs and no additional logic for event counters or digital clocks.
When should an engineer choose CD4518BNSRG4 over a 74HC162 presettable decade counter for a 1.5 MHz application?
For applications that need 2 decade counters in a single package with a wide 3 V to 15 V supply range, the CD4518BNSRG4 is more cost-effective than two 74HC162 devices. However, if synchronous preset and higher clock frequencies above 1.5 MHz are required, the 74HC162 with its 95 MHz maximum frequency and synchronous clear capability is the better choice for high-speed BCD counting in a tightly timed digital pipeline.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit